Hurukuro pfupi nezve munyu wekupfapfaidza testers ③

一、 Salt spray test process

Miyero yakasiyana inopa maitiro akasiyana-siyana ekuyedza, chinyorwa ichi kuGJB 150.11A-2009 "chiuto chekushandisa marabhoritari nzira dzekuyedza nharaunda Chikamu 11: bvunzo yekupfapfaidza yemunyu" semuenzaniso, tsanangura maitiro ekuyedza munyu wekupfapfaidza, kusanganisira chaiwo:

1.Salt spray test standard: GJB 150.11A-2009

2.Test piece pretreatment: bvisa zvinosvibisa, zvakaita semafuta, girisi, guruva, pretreatment inofanira kunge iri shoma sezvinobvira.

3.Yekutanga bvunzo: yekutarisa yekuona, kana zvichidikanwa, yemagetsi uye mekiniki kuita bvunzo, kurekodha yekutanga data.

4.Matanho ekuedza:

    a.Gadzirisa tembiricha yekamuri yekuyedza kusvika 35 ° C uye chengeta muenzaniso kweinenge maawa maviri;

    b.Pfaya kwemaawa makumi maviri nemana kana sezvataurwa;

    c.Pomesa zvienzaniso patembiricha ye15° C kusvika 35° C uye hunyoro husingapfuuri 50% kwemaawa makumi maviri nemana kana kuti kwenguva yakatarwa;

   d.Dzokorora kupfapfaidza munyu uye nzira yekuomesa kamwe chete kuti upedze mavhiri maviri.

5.Recovery: Shamba zvinyoronyoro zvienzaniso nemvura inoyerera.

6.Muedzo Wekupedzisira: Kuongororwa kwekuona, bvunzo dzemuviri uye dzemagetsi kana zvichidikanwa, uye kurekodha kwemhedzisiro yebvunzo.

7.Ongororo yemhedzisiro: Ongorora mhinduro dzebvunzo kubva pazvinhu zvitatu: zvemuviri, zvemagetsi uye ngura.

二、Zvinhu zvinokanganisa bvunzo yekupfapfaidza munyu

Zvinhu zvikuru zvinokanganisa zvabuda muyedzo yekupfapfaidza munyu zvinosanganisira: tembiricha yekuyedza uye hunyoro, kuwanda kwemushonga wemunyu, kona yekuiswa kwesample, kukosha kwepH yemushonga wemunyu, kuwanda kwekuiswa munyu uye spray nzira.

1）Edza tembiricha uye hunyoro

Kuora kwekupfapfaidza munyu kunobva pamhinduro dzechigadzirwa che electrochemical, uko tembiricha nehunyoro zvinoita basa rakakosha mukugadzirisa mafambiro ekuita uku.Kukwira kwetembiricha kunowanzokonzera kukurumidza kufambira mberi kwekuora kwemunyu.Sangano reInternational Electrotechnical Commission (IEC) rakavheneka chiitiko ichi kuburikidza neongororo pamusoro pekukasira kuyedza corrosion yemhepo, ichiona kuti kuwedzera kwe10°C kunogona kuwedzera huwandu hwekuora nezvikamu zviviri kana zvitatu, ukuwo uchiwedzera conductivity ye electrolyte negumi kusvika makumi maviri. %.

Asi, hakusi kungokwira kwemutsara;chiyero chaicho chekuora hachiwanzoenderana nekukwira kwetembiricha nenzira yakatwasuka.Kana tembiricha yekuyedza yakakwira zvakanyanya, mutsauko uripo pakati pemunyu wekupfapfaidza corrosion mechanism uye mamiriro epasirese anogona kumuka, zvichipa mubvunzo kuvimbika kwemhedzisiro.

Nyaya yacho yakasiyana nehunyoro.Metal corrosion ine yakakosha humidity point, ingangoita 70%, kupfuura iyo munyu unotanga kunyungudika, ichigadzira conductive electrolyte.Sezvineiwo, panodonha humidity, iyo munyu munyu inonyura kusvika kunaya kwemunyu kwaitika, zvichikonzera kudzikira kunotevera mukuora.Kutamba kwakapfava pakati petembiricha nehunyoro, chimwe nechimwe chichipesvedzera chimwe munzira dzakaoma kunzwisisa, kuona nhanho iyo ngura inofamba ichienda mberi.

2）Iyo pH yemushonga wemunyu

Iyo pH yemushonga wemunyu ndechimwe chezvinhu zvakakosha pakuona mhedzisiro yebvunzo yekupfapfaidza munyu.Kana pH yadzikira kupfuura 7.0, kuwanda kwehydrogen ions mumushonga kunowedzera sezvo pH inoderera uye acidity inowedzera, nokudaro kuwedzera kukorora.

3) Sample yekuisa kona

Kana pfapfaidzo yemunyu ikadonha yakatwasuka, nzvimbo inofungidzirwa yemuenzaniso inowedzera kana sampuli iri panzvimbo yakachinjika, zvichikonzera kukukurwa kwakanyanya kwenzvimbo yemuenzaniso nepfapfaidzo yemunyu, uye nokudaro kuwedzera chiyero chekuora.

4）Kuisa munyu munyu

Kuti kusanganiswa kwemushonga wemunyu kunokanganisa sei chiyero chekuora kunoenderana nerudzi rwezvinhu uye chifukidzo chayo chepamusoro.Kana kusungirirwa kusingapfuuri 5 muzana, tinocherechedza kuti chiyero chekuora kwesimbi, nickel uye mhangura kunowedzera sezvo kugadziriswa kwekugadzirisa kunokwira;ukuwo, kana fungidziro inodarika 5 muzana, kukora kwesimbi idzi kunoratidza katsika kekukoromora inversely proportional nekuwedzera kweconcentration.Nekudaro, kune simbi dzakaita sezingi, cadmium nemhangura, chiyero chekuora chinogara chakabatana nekugadzirisa kwemunyu, kureva, kukwirisa kwacho, ndiko kukurumidza kwekuora.

Pamusoro peizvi, zvinhu zvinokanganisa mhedzisiro yemunyu wekupfapfaidza bvunzo zvinosanganisira: kukanganiswa kwebvunzo, kurapwa kweyeyedzo sampuli, nzira yekupfapfaidza, nguva yekupfapfaidza, zvichingodaro.